89 lesabre t type.. Had a transmission leak so when the fluid got a lil low it would shake when shifting into overdrive, as long as fluid was full it ran fine. Had the pan gasket and filter changed to solve problem but instead it created more.. Now it Wont go over 30mph, it Wont shift past 2nd(?) it jus revvs.. Any suggestions?

The erratic jumping in and out of overdrive (O/D) on your 2006 Terrano 3GMR with a 3.2L engine could be caused by a few different issues. Here are some possible causes and fixes:

1. Faulty speed sensor: The speed sensor provides input to the transmission control module (TCM) to determine when to engage overdrive. A faulty sensor can cause the TCM to think the vehicle is going too slow or too fast for overdrive engagement. A mechanic can test the speed sensor and replace it if necessary.
2. Low transmission fluid level: Low transmission fluid level can cause the transmission to shift erratically or not engage overdrive. Check the transmission fluid level and add fluid as necessary. If the fluid level is low, it's important to also check for any leaks that may be causing the fluid loss.
3. Worn or damaged overdrive band: The overdrive band is responsible for engaging and disengaging overdrive. If the band is worn or damaged, it may not engage properly. A mechanic can inspect the overdrive band and replace it if necessary.
4. Transmission control module (TCM) issues: The TCM controls the shifting and engagement of overdrive. If the TCM is malfunctioning, it may not engage overdrive or cause erratic shifting. A mechanic can test the TCM and replace it if necessary.

It's recommended to have a professional mechanic diagnose and repair the issue, as the transmission is a complex and vital component of the vehicle.

1. ransmission fluid: Low or dirty transmission fluid can cause a range of transmission issues, including loss of reverse and overdrive. Check the transmission fluid level and condition, and consider flushing and replacing the fluid if it is dirty or low.
2. Transmission filter: A clogged transmission filter can restrict the flow of fluid through the transmission and cause issues with reverse and overdrive. Consider replacing the transmission filter and flushing the fluid to see if this resolves the issue.
3. Shift solenoid: The shift solenoid is responsible for controlling the flow of fluid through the transmission to engage different gears. If the solenoid is faulty or damaged, it can cause issues with reverse and overdrive. Consider having the shift solenoid tested and replaced if necessary.
4. Valve body: The valve body is a complex component within the transmission that helps to control the flow of fluid and engage different gears. If the valve body is damaged or worn, it can cause issues with reverse and overdrive. Consider having the valve body inspected and replaced if necessary.
5. Internal transmission damage: If none of the above issues resolve the problem, there may be internal damage within the transmission that is causing the loss of reverse and overdrive. In this case, it may be necessary to have the transmission rebuilt or replaced.

It's important to address these issues promptly to prevent further damage to the transmission or other components in your Chevy Silverado

This is a normal condition, the nag transmission control module needs to see a certain temperature of the fluid before shifting into overdrive this is due to fluid viscosity, if the fluid is too thick
due to cold temps the pump cannot supply enough pressure to fully engage
the overdrive clutch, if it did you would have slippage in overdrive

Certified chrysler technician

For Automatic transmission problem,click the link below:----Overdrive light in the dash blinks? http://repairhelpcenter.blogspot.com/2012/01/overdrive-light-in-dash-blinks.html
--------- Automatic transmission troubleshooting:----

http://howtobyme.blogspot.com/2011/11/automatic-transmission-will-not-go-into.html

---------
Automatic transmission shift lever issues?-------

http://technoanswers.blogspot.com/2012/01/automatic-transmission-shift-lever-hard.html

-----------
AUTOMATIC TRANSMISSION FLUID LEVEL? --

http://schematicsdiagram.blogspot.com/2011/07/how-to-check-automatic-transmission.html

--------------

AUTOMATIC TRANSMISSION FLUID AND FILTER?

http://schematicsdiagram.blogspot.com/2011/07/how-to-change-automatic-transmission.html

-----------
Transmission fault light on car dash?

http://schematicsdiagram.blogspot.com/2011/12/transmission-fault-light-on-car-dash.html

--------
Transmission shifting problem?

http://schematicsdiagram.blogspot.com/2012/01/transmission-shifting-problem-on-toyota.html

--------
Transmission Slips out of 2nd gear?

http://repairhelpcenter.blogspot.in/2012/02/transmission-slips-out-of-2nd-gear.html

-----------
OD light flashing and transmission fluid leaking?

http://repairhelpcenter.blogspot.in/2012/02/od-light-flashing-and-transmission.html

----------
Why Transmission fluid leaks near radiator?

http://repairhelpcenter.blogspot.in/2012/02/transmission-fluid-leaks-near-radiator.html

----------
Transmission fluid leaking?

http://technoanswers.blogspot.in/2012/02/ford-windstar-transmission-fluid.html

-------------
****** wont go in reverse?

http://technoanswers.blogspot.in/2012/02/dodge-neon-wont-go-in-reverse.html

-------------
Automatic transmission will not go into reverse?

http://technoanswers.blogspot.in/2012/02/dodge-automatic-transmission-will-not.html

----------
Transmission is making buzzing noise?

http://technoanswers.blogspot.in/2012/02/transmission-is-making-buzzing-noise.html

-----------

This will help.

Thanks.

Check the transmission fluid level if it's low, or even over filled it's probably the issue. And also make sure the T-fluid is deep red in color, and no oil or water is in it. Note: Some radiator additive's and treatment's can cause the sill to leak and allow cooling fluid to get in the trans. If your fluid is all good but problem continues let me know and we'll go from here.

Often the cause is low transmission fluid. Follow the instructions in your manual for checking it, because unlike checking your oil level, checking transmission fluid levels require that the vehicle is running.

Please, by no means do this check if you are uncomfortable doing it. Have a "gearhead" friend that you trust or a mechanic show you how.

Most manufacturers ask that you start the car, and while holding down the brake pedal, slowly shift through reverse and then all your forward gears, then place the car back in park.

Next (with the car running- CAREFUL!), find the transmission dipstick under the hood, pull it out, and wipe it off. Put the dipstick back in, pull it out and check the level. If it is low, you need to add some transmission fluid of the type specified by your manual into the dipstick hole (you will need an inexpensive transmission fill funnel), a little at a time, and keep checking it as described above until it is at the FULL mark.

It is important to note that the dipstick is marked FULL HOT (car is warmed up) and FULL COLD (car is NOT warmed up) because transmission fluid expands quite a bit and overfilling is bad for your tranny!

I own a Jeep with a Chrysler "straight six" engine (one of the best motors ever!) and my transmission slipped because of low fluid - I added a bottle of "transmission stop slip and stop leak" fluid to it and topped off the remainder with the proper type of transmission fluid, and now, seven months later, I do not lose any tranny fluid and it shifts great! The stop leak is more expensive, but IMHO it is worth the cost.

Please rate my solution when you get a chance!

VA

If it won't go into overdrive a speed sensor within the transmission may not be sending the shift signal to the transmission. Check fluid levels to make sure that's not causing the problem. Also, check that the fluid is red color and clean.

Transmission probably needs to be serviced at a reputable shop if you want this problem fixed.

It's probably a valve body problem, shift solenoid, stuck valve or something of that nature. Is the fluid fairly clean and is it full? To check the fluid level the engine must be idling and the transmission must be in park. The fluid should be Red, not brown or black. Those vehicles have a nasty habit of the seal going bad between the transmission and transfer case (4X4 only) and it will dump about 2 quarts of transmission fluid into the tranfer case. This leaves the trany dangerously low on fluid but, you never know it because there is no fluid leaking on the ground. Check the transfer case oil, is it way over full, if so that seal is bad.

Sounds like you've used the wrong type of transmission fluid for your trans.
Check in your owners manual.

get the truck where you can service it and have a transmission service done this will include: new fluid and transmission filter
because it sounds as if it has not been changed in awhile open the hood and if the transmission fluid smells cooked change it right away